Abstract Oxidative stress mediates apoptosis of goose (Anser cygnoides) follicular granulosa cells (GCs), thus affecting laying performance. To investigate the effects of vitamin E (VE) on goose follicular GCs, an oxidative stress model was established by adding H2O2 (100 μmol/L), and the effects of oxidative stress on apoptosis in goose follicular granulosa cells were examined in vitro. Four different concentrations of proanthocyanidins, resveratrol, gallic acid and VE were added to the model, and the best reliever and optimum concentration were screened out. Furthermore, ELISA, qPCR and immunofluorescence detection techniques were used to explore the effect of the best alleviator VE on the apoptosis of goose follicle GCs mediated by oxidative stress. The results showed that 100 μmol/L H2O2 treatment for 12 h extremely significantly increased the level of apoptosis in follicular GCs (P<0.01). Among the 4 different antioxidants, 40 μmol/L VE had the best alleviation effect on the oxidative stress model (P<0.01). The addition of VE significantly inhibited the release of lactate dehydrogenase (LDH) (P<0.05), and reduced the expression of oxidative stress-related genes superoxide dismutase 1 (SOD-1), SOD-2, catalase (CAT), cyclooxygenase 2 (COX-2) and reactive oxygen species (ROS) content (P<0.05). Besides, GCs proliferation viability increased significantly (P<0.05) and there was a phenomenon of dose dependence. The expression levels of anti-apoptotic genes B-cell lymphoma/leukemia-2 (Bcl2) were significantly increased (P<0.05), but pro-apoptotic genes cysteinyl aspartate specific proteinase 3 (Caspase3), Caspase9 and tumor protein p53 (p53) were significantly decreased (P<0.05), as well as the number of apoptotic cells were significantly reduced after VE treatment (P<0.05). In conclusion, the goose follicle GCs had obvious apoptosis under oxidative stress. Adding VE could inhibit oxidative stress and relieve goose follicle GCs apoptosis. The study can provide reference for improving goose laying performance.
HUANGFU Yi-Wen,SONG Li-Na,HOU Li-E, et al. Vitamin E Relieves the Apoptosis of Goose (Anser cygnoides) Granulosa Cells by Inhibiting Oxidative Stress[J]. 农业生物技术学报, 2023, 31(8): 1659-1670.
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